DevTools Advanced Location Override is a robust Chrome extension that empowers web developers to effectively test location-based functionalities in their applications. Unlike traditional DevTools that limit geolocation overrides to a single set of coordinates, this tool allows users to manipulate various geolocation parameters such as accuracy, heading, speed, altitude, and more. It also features the ability to save favorite locations as presets and provides real-time updates compatible with all geolocation APIs, making it an essential tool for any developer working with location data.

In addition to manual overrides, the extension includes a powerful route simulation feature. Users can upload KML, GPX, or GeoJSON files to simulate movement along defined routes, complete with automatic bearing calculations for realistic direction changes. The playback speed is customizable, and the tool supports timestamp-based playback, enhancing testing accuracy. Designed with privacy in mind, all data remains local to the user's machine, ensuring a secure testing environment.